Rolling-mill.



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V. .E. EDWARDS.

0mm; MILL.- I APPLICATION FILED JULY 31. 1915. 1,290,942, Patented Ja11.14,1919.

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ROLLING MILL.

APPLICATION FILED lULY 31, i915.

Patented J an.- 14, 1919.

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UNITED STATES PATENT OFFICE.

VICTOR E. EDWARDS, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO MORGAN CONSTRUCTION COMPANY, OF WORCESTER, MASSACHUSETTS, A CORPORA- TION OF MASSACHUSETTS.

ROLLING-MILL.

Specification of Letters Patent. Patented J an. 14, 1919,

Application filed July 31, 1915. Serial No. 43,047.

To all whom it may concern:

Be it known that I, VICTOR E. EDWARDS, a citizen of the United States, residing at Worcester, in the county of WVorcester and Commonwealth of Massachusetts, have invented a new and useful Improvement in" application Serial No. 87 3,463, filed Novem- .ber 23, 1914.

The arrangement and disposition ofinstrumentalities found necessary for the successful carrying out of said method, together with the various refinements troduced for the above purpose, are fully set forth in the following description 'of my invention, reference being had to the accompanying drawings, in which- Figure 1 is a plan view of the apparatus embodying the invention,

Fig. 2 is a view of the same in side elevation.

Fig. 3 is a View of the same in end elevation, from the right hand end of'Fig. 1.

Fig. 4 is an enlarged fragmentary sectional view, taken on line 44, Fig; 1.

Similar reference characters refer to similar parts in the difi'erent figures.

, As fully set forth in the aforesaid appli-' cation covering my improved method for the production of accurate.rounds, the continuous production of a guide'round, having a cross-sectional area slightly in excess of the I cross-sectional area of the desired round, is

first contemplated; the further continuous reduction of said oversize round, under conditions which minimize the opportunity for error to arise by reason of the succespresent invention relates to a rolling of practice 'insive changes in the shape of the material dur1ng said reduction,

forms the subject matter of the aforesaid method.

In the accompanying drawings, I have indicated diagrammatically at 1, astand of rolls representing the finishing end of a guide mill designed for the continuous production of greater cross-sectional area than the bar. which it is desired eventually to produce. In advance of the rolls 1, is located a standor housing 2, providing sets of rolls designed for the'final reduction of the material acdetails of said stand of rolls 2 being fully set forth and described in another copending companion application, Serial No. 43,132, filed August 2, 1915'."

, In the drawings of the present application, the said stand 2 is shown as elevated above the level of the stand 1, merely for purposes of construction, in connection with an elevated cooling. bed, not shown; it is obvious that the two stands maybe disposed at the same level.

Between the stands 1 and 2 aframework 3 supports an elongated open trough 4 preferably made in sections, as shown,'and providing a shallow channel havin its 1ongi-' (Te app-roxi matelyv with a line connecting the pass ofv stand 1 with the first pass of stand 2. The

tudinal axis inclined to coinci rear side of thetrough 4 provides an upstanding vertlcal wall 5 which effectually restrains movement of the rod' out of the a bar or rod having a slightly;

.cording to my improved method, the novel trough in the direction of said wall. The

front side of the trough, however, isonly slightly raised above the floor of thetrough, by a wall 6 which provides a downwardly and forwardly inclined lip or extension 7 throughout the length of the trough. An inclined plate 8,-preferably made in sections, and forming a continuation of the lip or extension 7, extends downwardly to a horizontal shelf 9 also preferably made in sections, which runs the entire length of trough 4. inclined section 10 of the shelf 9 extends fromv the forward end of the latter and slopes down gradually to the floor of the mill.

As shown in Fig. 1, the trough 4 assumes a slight outward bulge, or deviation from the straight line joining the passes of the two stands of rolls, this convexity of the trough being provided in order to assist the initial movement of the metal over the low wall 6, and onto the plate 8, in the event of an overfeed of the rOd by the rolls of stand 1.

At its forward end the inclined plate 8 supports a curved guide 11, of substantially channel formation, the rear or convex side of which serves to redirect the metal which constitutes such an overfeed, toward the first pass of stand 2. The guide 11 is carried across the forward lower corner of inclined plate 8, and has a straightcontinuation 12, rising from the inner edge of the inclined section 10 and from the floor of the mill. Rising from the outer edges of shelf 9 and inclined section 10 and from the floor of the mill are the vertical walls 13 and 14: parallel with the wall 12, which serve to confine the loop formed by the overI'ed metal.

Between the forward end of trough & and the stand 2, the framework of the mill supports a snap shear 15, of the general type shown in United States Letters Patent to Thomas M.Jewell, No. 966,557, August 9, 1910. The supporting framework of the shear 15 provides a flaring mouth for the reception of the rod, one side 16 of which is in alinement with the rear wall 5 of trough 4, while the other side 17 forms a continuation of the guide 11, to facilitate the passage through the shear, of the metal forming the overfeed loop. As fully set forth in the specification of the aforesaid patent to Jewell, the operation of said shear is effected by the manipulation of a lever 18 to swing the blades of the shear into contact with the advancing rod. When the said blades have once engaged the rod, the movement of the rod itself serves to draw the cutting edges together, efi'ect-ing a complete severance of the rod. Upon emerging from the passes of stand 2, the rod is received within a conveying trough 19, the sides and bottom of which provide a plurality of recesses 20 as shown in Fig. 4. The trough 19 leads the rod through a second snap shear 21, which is a duplicate, in operation, of the shear 15. Emerging "from the shear 21 the finished rod passes onto a cooling bed, not shown, of ordinary construction.

It will be understoodthat the oversize rod in its passage from the final stand of rolls 1 of the guide mill to the passes of stand 2, will be supportedin the trough 1, until the overfeed of the metal by the rolls 1 causes it to leave the trough and to form a loop upon the plate 8 and shelf 9. The contour of such a loop is represented, for example, by the broken line 22, Fig. 1, or by the broken line 23, it being clear that the size of the same is determined by the amount of overfeed imparted by the rolls 1. The walls 12, 13 and 1 1 prevent the spreading of the loop onto the floor of the mill, while the guide 11 controls the formation of the loop and insures the delivery of the metal therein to the rolls of stand 2, in a direction approximately coinciding with the axes of the passes of said rolls. 7

In carrying out the method of the aforesaid copending application Serial No. 873,463, not only is the control of the free overfeed loop in themanner above described most essential, but it is a requisite to the accurate reduction of the rod by the stand of rolls 2, that the oversize rod produced in the guide mill stand 1 be approximately round in cross-section, to enable the rolls of housing 2 to operate properly thereon. The

shear 15 is utilized advantageously to sever a short sample from the rear end of a rod so that the'product of the guide mill can be tested for accuracy. In this manner it can be determined whether or not the passes of the guide mill are suitably adjusted to give the desired cross-sectional shape, capable of being successfully and accurately reduced by the passes of stand 2, before any subsequent rods are run through the mill. In the same way, the snap shear 21 is operable to sever a sample from the rear end of a rod emerging from the passes of stand 2, in order to ascertain the accuracy of the operation performed by the rolls of said stand, before the succeeding rod is run through said rolls. The recesses 20 of the trough 19 enable the sample to be seized with tongs and withdrawn, for the purpose of testing the accuracy of the same with calipers, or the like.

I claim:

1. In a rolling mill, the combination with separated stands of reducing rolls, having their passes approximately in alinement, of

separated stands of reducing rolls, of a trough for conveying the metal in its passage between said stands, one side of said trough being relatively low, and means, operable in the event of an overfeed of metal between said stands,whereby said overfeed is directed over said low side of the trough.

3. In a rolling mill, a curved trough for conveying metal, having its receiving and delivery ends substantially in axial alinement, the convex side of said trough being lower than its concave side.

4. In aTolling mill, the combination with separated stands of reducing rolls, of means for feeding the metal continuously between and through said stands, a curved trough 1 adapted normally to convey the metal in its passage between said stands, and means, operable in the event of an overfeed of metal, whereby to cause the overfeed loop to be deflected over the convex side of said trough.

Dated this 26th day of July, 1915.

' VICTOR E. EDWARDS. Witnesses:

WILLARD A. WINN, FRANK M. LORD. 

